19837047323 has 4 divisors (see below), whose sum is σ = 19860977040. Its totient is φ = 19813117608.

The previous prime is 19837047233. The next prime is 19837047353. The reversal of 19837047323 is 32374073891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32374073891 = 103 ⋅314311397.

It is a cyclic number.

It is not a de Polignac number, because 19837047323 - 2¹⁸ = 19836785179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19837047353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11963615 + ... + 11965272.

It is an arithmetic number, because the mean of its divisors is an integer number (4965244260).

Almost surely, 2^19837047323 is an apocalyptic number.

19837047323 is a deficient number, since it is larger than the sum of its proper divisors (23929717).

19837047323 is an equidigital number, since it uses as much as digits as its factorization.

19837047323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23929716.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 19837047323 in words is "nineteen billion, eight hundred thirty-seven million, forty-seven thousand, three hundred twenty-three".